Percussion instrument consisting of tuned wooden bars (9)

I believe the answer is:

xylophone

(Other definitions for xylophone that I've seen before include "Musical instrument with bars" , "Oxyphenol (anag.)" , "Instrument with wooden bars to be struck" , "Percussion instrument played with small mallets" , "Patrick Moore's instrument" .)

I've seen this clue in The Mirror.

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